// multi-utility computation suite · offline · instant · precise
┌──────────────────────────┐
│ [c] calcalyst_ │
│ computation suite │
└──────────────────────────┘
// select a module to initialize
/ search↵ open firstesc close
// adsenseEMPTY_LEADER_SLOT728×90
// adsenseMOBILE_ANCHOR_SLOT320×50
// keyboard_shortcuts
/focus search
↑↓navigate module list
Enter
open first result from search
open highlighted
compute when module is open
compute when focused in a field
Escclose module · clear selection
⌫
eng.boiler-efficiency Calculator
Calculates boiler thermal efficiency from flue gas temperature, excess air percentage, and fuel properties using the direct or indirect method. Flue gas heat loss is the largest boiler efficiency loss — every 20°C reduction in stack temperature raises efficiency approximately 1%.
Inputs
Fuel Input Mmbtu
Reference formula or conversion factor shown for context.
Steam Output Mmbtu
Reference formula or conversion factor shown for context.
Flue Gas Temp F
Reference formula or conversion factor shown for context.
Ambient Temp F
Reference formula or conversion factor shown for context.
Results
boiler efficiency
Useful output divided by total input, as a percentage. True 100% efficiency is impossible — losses appear as heat. LEDs: 30–50%. Electric motors: 85–97%. Switching supplies: 85–95%.
combustion efficiency
Useful output divided by total input, as a percentage. True 100% efficiency is impossible — losses appear as heat. LEDs: 30–50%. Electric motors: 85–97%. Switching supplies: 85–95%.
stack heat loss
The decrease or degradation from the baseline.
excess heat loss
The decrease or degradation from the baseline.
ASME PTC 4 method
The recommended calculation method or analytical approach for these conditions.